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In this paper, we examine the Age of Information (AoI) of a source sending status updates to a monitor through a queue operating under the Processor Sharing (PS) discipline. In the PS queueing discipline, all the updates are served…

信息论 · 计算机科学 2023-09-06 Beñat Gandarias , Josu Doncel , Mohamad Assaad

Age of information (AoI) is a powerful metric to evaluate the freshness of information, where minimization of average statistics, such as the average AoI and average peak AoI, currently prevails in guiding freshness optimization for related…

信息论 · 计算机科学 2023-11-29 Yuquan Xiao , Qinghe Du

Age of Information (AoI), namely the time that has elapsed since the most recently delivered packet was generated, is receiving increasing attention with the emergence of many real-time applications that rely on the exchange of…

信息论 · 计算机科学 2024-05-08 Xinlu Dai , Cyril Leung

We consider a wireless network where N nodes compete for a shared channel over the CSMA/CA protocol to deliver observed updates to a common remote monitor. For this network, we rate the information freshness of the CSMA/CA based network…

信息论 · 计算机科学 2023-03-07 Liang Li , Yunquan Dong , Chengsheng Pan , Pingyi Fan

We consider the problem of minimizing age of information in general single-hop and multihop wireless networks. First, we formulate a way to convert AoI optimization problems into equivalent network stability problems. Then, we propose a…

信息论 · 计算机科学 2021-01-26 Vishrant Tripathi , Eytan Modiano

The freshness of sensor data is critical for all types of cyber-physical systems. An established measure for quantifying data freshness is the Age-of-Information (AoI), which has been the subject of extensive research. Recently, there has…

网络与互联网体系结构 · 计算机科学 2024-12-18 Markus Fidler , Flavio Gallistl , Jaya Prakash Champati , Joerg Widmer

Age of Information (AoI) measures the freshness of data in mission critical Internet-of-Things (IoT) applications i.e., industrial internet, intelligent transportation systems etc. In this paper, a new system model is proposed to estimate…

Online content platforms are concerned about the freshness of their content updates to their end customers, and increasingly more platforms now invite and pay the crowd to sample real-time information (e.g., traffic observations and sensor…

计算机科学与博弈论 · 计算机科学 2019-09-05 Shugang Hao , Lingjie Duan

This paper studies the minimum-age scheduling problem in a wireless sensor network where an access point (AP) monitors the state of an object via a set of sensors. The freshness of the sensed state, measured by the age-of-information (AoI),…

信息论 · 计算机科学 2021-10-26 Yulin Shao , Qi Cao , Soung Chang Liew , He Chen

We study the problem of optimizing the decisions of a preemptively capable transmitter to minimize the Age of Incorrect Information (AoII) when the communication channel has a random delay. We consider a slotted-time system where a…

信息论 · 计算机科学 2023-02-21 Yutao Chen , Anthony Ephremides

We propose and evaluate the performance of a Non-Orthogonal Multiple Access (NOMA) dual-hop multiple relay (MR) network from an information freshness perspective using the Age of Information (AoI) metric. More specifically, we consider an…

Bufferless and single-buffer queueing systems have recently been shown to be effective in coping with escalated Age of Information (AoI) figures arising in single-source status update systems with large buffers and FCFS scheduling. In this…

信息论 · 计算机科学 2021-10-22 Nail Akar , Ozancan Dogan , Eray Unsal Atay

Age of Information (AoI) is a key metric used for evaluating data freshness in communication networks, particularly in systems requiring real-time updates. In positioning applications, maintaining low AoI is critical for ensuring timely and…

信号处理 · 电气工程与系统科学 2026-03-30 Wasif J. Hussain , Don-Roberts Emenonye , R. Michael Buehrer , Harpreet S. Dhillon

This paper considers a cooperative status update system with a source aiming to send randomly generated status updates to a designated destination as timely as possible with the help of a relay. We adopt a recently proposed concept, Age of…

信息论 · 计算机科学 2020-01-14 Bohai Li , He Chen , Yong Zhou , Yonghui Li

Age of Information (AoI) has proven to be a useful metric in networked systems where timely information updates are of importance. In the literature, minimizing "average age" has received considerable attention. However, various…

信息论 · 计算机科学 2020-10-06 Jaya Prakash Champati , Hussein Al-Zubaidy , James Gross

Age of Information (AoI) has attracted much attention recently due to its capability of characterizing the freshness of information. To improve information freshness over fading channels, efficient scheduling methods are highly desired for…

信息论 · 计算机科学 2020-02-24 Yalei Wang , Wei Chen

We propose a frame slotted ALOHA (FSA)-based protocol for a random access network where sources transmit status updates to their intended destinations. We evaluate the effect of such a protocol on the network's timeliness performance using…

信息论 · 计算机科学 2023-03-08 Zhiling Yue , Howard H. Yang , Meng Zhang , Nikolaos Pappas

Age of Information (AoI) has gained importance as a Key Performance Indicator (KPI) for characterizing the freshness of information in information-update systems and time-critical applications. Recent theoretical research on the topic has…

网络与互联网体系结构 · 计算机科学 2019-08-29 Hasan Burhan Beytur , Sajjad Baghaee , Elif Uysal

While age of Information (AoI) has gained importance as a metric characterizing the fresh-ness of information in information-update systems and time-critical applications, most previous studies on AoI have been theoretical. In this chapter,…

网络与互联网体系结构 · 计算机科学 2021-06-07 Elif Uysal , Onur Kaya , Sajjad Baghaee , Hasan Burhan Beytur

While the notion of age of information (AoI) has recently emerged as an important concept for analyzing ultra-reliable low-latency communications (URLLC), the majority of the existing works have focused on the average AoI measure. However,…

网络与互联网体系结构 · 计算机科学 2019-11-28 Mohamed K. Abdel-Aziz , Chen-Feng Liu , Sumudu Samarakoon , Mehdi Bennis , Walid Saad